Hou Juan, Chen Qinqin, Meng Xiangzhi, Liu Huiling, Feng Wei
School of Chemistry and Environmental Engineering, Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry, Jilin Provincial International Joint Research Center of Photo-functional Materials and Chemistry, Changchun University of Science and Technology Changchun 130022 China
Department of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University Harbin 150040 China
RSC Adv. 2024 Nov 12;14(49):36273-36280. doi: 10.1039/d4ra06635a. eCollection 2024 Nov 11.
Green fluorescent carbon dots (GCDs) were synthesized using -phenylenediamine and ethylenediamine through a one-step hydrothermal method, thereby eliminating the need for further processing. The GCDs exhibited strong green fluorescence that was effectively quenched by Hg and Fe, with minimal interference from other metal ions, anions, and small biological molecules. By optimizing the buffer solution, interference from Fe was mitigated, which enhanced the robustness of the GCDs as a fluorescence probe for Hg detection. The detection range for Hg was 0-100 μM, with a detection limit of 300 nM. The quenching mechanism was thoroughly investigated, and the GCDs were successfully applied to detect Hg in real water samples, yielding satisfactory results. This work highlights the potential of GCDs for practical environmental monitoring and water quality analysis.
采用对苯二胺和乙二胺通过一步水热法合成了绿色荧光碳点（GCDs），从而无需进一步处理。GCDs表现出强烈的绿色荧光，Hg和Fe能有效猝灭该荧光，而其他金属离子、阴离子和小生物分子的干扰极小。通过优化缓冲溶液，减轻了Fe的干扰，增强了GCDs作为Hg检测荧光探针的稳健性。Hg的检测范围为0 - 100 μM，检测限为300 nM。对猝灭机制进行了深入研究，GCDs成功应用于实际水样中Hg的检测，结果令人满意。这项工作突出了GCDs在实际环境监测和水质分析中的潜力。
